XML 28 R32.htm IDEA: XBRL DOCUMENT v2.4.0.6
Income Taxes (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Deferred tax assets:    
Depreciation $ 95,000 $ 91,000
Allowance for bad debts 37,000 37,000
Net operating loss carryforwards 22,525,000 22,516,000
Stock option expense 1,051,000 1,051,000
Research and other credits 977,000 1,008,000
Other temporary differences 15,000 15,000
Total gross deferred tax assets 24,700,000 24,718,000
Less valuation allowance (24,700,000) (24,718,000)
Deferred Tax Assets, Net of Valuation Allowance $ 0 $ 0